Rapid traverse and feed control for boring mills



NOV. 27 1923 A. TROSCH RAPID TRAVERSE AND FEED CONTROL FOR BORING MILLS Filed May 4, 1920 7 Sheets-Sheet 1 QM M Jmeniar $771963 Iraach m (L aiibornqgz "[11 ll' n I ll Nov. 27, 1923 A. TROSCH RAPID TRAVERSE AND FEED CONTROL FOR BORING MILLS Filed May 4, 1920 7 Sheets-Sheet 2 ween-Z292 d Trwac Q Yfwe Now 27 i923 A. TROSCH RAPID TRAVERSE AND FEED CONTROL FOR BORING MILLS Filed May 4, 7 Sheets-Sheet 3 SQ v 1 I \ZTC m E *Ha- Nov. 27 1923 A. TROSCH RAPID TRAVERSE AND FEED CONTROL FOR BORING MILLS 7 Sheets-Sheet 4 Filed May 4, 1920 m A u A & m 1 i N a m m a a n M u 5 Q Q m i I. i| 1 R 1. M ll r l l mw 5 N n N v K J I III W 1 MM Us A al A ll lull A b RN LQ QT 3| w L u Q m MNQN NM Ira/021F207" Qvr'ed Trmch Nov. 27 1923 A. TROSCH RAPID TRAVERSE AND FEED CONTROL FOR BORING MILLS Filed May 4, 1920 7 Sheets Sheet 5 (IIIIII JI Nov. 27, 1923 1,475,255

A. TROSCH RAPID TRAVERSE AND FEED CONTROL FOR BORING MILLS Filed May 4, 1920 7 Sheets-Sheet e Q i Q 5 Q? *3 I i q 5 I R & I i

Q N i \Q i w l 5 9) a a g //V R LLJJ l 51 a I "5 3 k 3 C::1i I c i h r .a Z a I u A. TROSCH RAPID TRAVERSE AND FEED CONTROL FOR BORING MILLS,

Nov. 27 1 923 1 Filed May 4, 1,920

'7 Sheets-$heet 7 r 0 30 Z w m J frea? Troach Patented Nov. 27, 1923.

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ALFRED TROSCH, OF ROCHESTER, NEW YORK, ASSIGNOR TO ARTHUR H. INGLE, OF ROCHESTER, NEW YORK.

RAPID TRAVERSE AND FEED CONTROL FOR BORING MILLS.

Application filed May 4, 1920. Serial. No. 378,737.

York, have invented an Improvement in.

Rapid Traverse and Feed Controls for Boring Mills, of which thefollowing description, in connection with the acc-om.

panying drawings, is a specification, like characters on the drawings representing like parts in each of the several views.

This invention relates to mechanism for controlling the feed and rapid traverse movements in a vertical boring mill employing an adjustable cross rail with one or more tool spindles mounted for vertical or angular movement in saddles on said rail, a machine of this general type being shown in the patent to Moreton, No. 5693M patented October 13, 1896. A principal object of the invention is to provide a boring mill of.

the type stated equipped with a power rapid traverse and also with geared feed connections for moving either the saddle along the rail in either direction or the tool bar endwise in the saddle in either direction, and with controlling devices associated there with engageable by the operator without moving from his position at the tool head. In accordance with a further feature of the invention other control means for the rapid traverse and the feeds, and for reversing the same are provided at the side of the machine so as to be convenient of access for an operator tationed at this point; A further object is to provide in combination with power rapid traverse and geared feed connections to the saddle and tool spindle respectively, other means preferably hand operated for effecting a final fine adjustment of the tool spindle or bar with respect to the work, this means being also preferably. associated with the saddle and under the 'control of the operator without moving F 2 is a partial end view with the housing 1n section and with parts broken away; Fig. 3 is a partial front view of the rail extension bearing the control mechanism with parts broken away and in section;

Fig. 4 is a section on line 454 of Fig. 2;

Fig. 5 is a section on line 55 of Fig. 3

Fig. 6 is a section on line 66 of Fig. 3;

Fig. ,7 is a section on the broken line 7-.7

of Fig. 6;

Fig. 8 is a section on line 88 of Fig. 2; and

Fig. 9 is a partial elevation showing por tions of the control connections removed.

1' indicates the bed or base of the machine on which is mounted for rotary power driven movement a usual work table 2 on which the work piece to be bored is clamped in any usual or suitable manner. At opposite sides of this base are usual upright columns 3 equipped with ways 4 on their front faces, to which ways a cross rail 5 is fitted for vertical adjustment in usual manner. To the ways of this cross rail one or more tool holding saddles 6 are fitted, there being preferably, two of these saddles for operation adjacent the opposite sides of the work table. Each of these saddles has clamped thereto for angular adjustment a holder or mounting 7 for a tool bar or spindle 8. These tool spindles are fitted for endwise movement in these mountings, such movement being either perpendicular with respect to the work table or inclined thereto vention means is provided whereby the op.

erator from his station at either of the saddles or heads 6 may control the movements of said saddle and also of the tool spindle carried thereby either for rapidtraversing the same in either direction or for impart ing relatively slow feed movements thereto in either direction. The rail 5 has extending the length thereof and j ournaled therein a feed screw 9 and a feed shaft 10, with screw engaging nuts 11 on the respective saddles and feed shaft 10 having gearedconnections as usual (not shown) to screw stems in the saddles 6 which are connected to move the spindles 8 vertically in a manner well known in the art. Each nut 11 is connected by miter gears 12 with a short stub shaft lgjmounted in a bracket 14: carried by the -with a peripheral'rccess to receive fork and having at its extremity of the tool bar 8 as will be readily understood. In this way by manipulation of the respective stub shafts 13, 16, the toolspindle may be accurately-set with respect to the work by hand and from the operators position at the saddle after having been rapid traversed up to approximately the correct position by power as presently described. The shafts 9, lOhave loosely mounted at the outer ends thereof pinions 17, 18 respectively, having clutch faces 17, 18 at their outer sides. The extremities of the resp ec tive shafts 9, 10 beyond the pinions 17. 18 have slidably keyed or similarly applied thereto, clutch hubs 19, 20, both of which are engaged by a shipper lever 21'fulcrumed to the housing at an intermediate point at 22 and having a downwardly extended handle portion 23. Thus the shifting of this lever in one direction will connect the pinion 17 to the screw 9 for the horizontal saddle movement and a shifting in the other direction will disconnect the horizontal in re ment and connect the pinion 18 to the feed shaft 10 for the vertical spindle movement,

while with said lever in intermediate posi tion as shown in Fig. 8, both movements are disconnected' The pinions 17, 18 are both in geared engagement with a larger gear 24 journaled on a stub shaft 25 fixed to the housing. The gear 24 is driven by a' pinion 26 fixed on a shaft 27 journaled in the housing at the end of rail 5. An inner reduced end portion 27 of this shaft is journaled in a sleeve 28" iournaled in the housing and havlng fixed at its inner end a bevel gear 29 and having at its outer end a spur pinion 30 and with a clutch face 31st its extremity. Slidably keyed on the shaft 27 is'a gear 32 having a projecting hub 32' a shiftera clutch face32 adapted to engage the clutch face '31 when said gear is shifted to the right from the position shown in Fig. 8. The recessed hub 32 is engaged by a fork (not shown) carried by a shifter lever 33 fu crumed to the housing at 34. Journaled in the rail housing in parallelism with the shaft 27 is a. countershaft 35 having keyed thereon in spaced apart relation a pinion 36 and a larger gear 37, the gear 37 being constantly in mesh with the pinion 30 while the pinion 36 is brought into mesh with the gear 32 when said gear 18 shifted to the left in Fig. 8, its clutch face 32 being then disengaged. It will thus be understood that driving impulse from the gear 29 may be transmitted to the shaft 27 and thence to the vertical or horizontal feed connections selectively, either direct by engagement of the clutch faces 31-32", or with a s aeed reduction through-the pinion -30, gear 37, pinion 36 and gear 32. The bevel gear 29 is in mesh with an upper bevel gear 38 and lower bevel gear 39 both loosely tted on a vertical power shaft 40 and both having hub sleeves externally journaled in the rail housing to move vertically therewith. The inner opposing faces of the gears 38, 39 are formed with friction seats to be selectively engaged by 'a friction clutch 41 slidably keyed on the shaft 40 and adapted to be shifted for bringing either of the gears 38, 39 into frictional driven engagement with the shaft 40. The clutch 41 is engaged by a shipper fork 42 carried by a bell crank lever 43 fulcrumed to the housing at 44 and having an upwardly extending arm 43= en gaged at its top with a link 45. The lever arm 43 is also engaged at an intermediate point by one end of a tension spring 46 the other end of which is anchored to the housing opposite the intermediate position of said arm so that this spring tends constantly to swing said lever to a position where the clutch 41 is held neutral, i. e., disengaged from both of the gears 38, 39. The link has its other end engageduvith an arm 47 fixed on a shaft 48 journaled in the rail housing. The shaft 48 has fixed thereon a spiral gear 49 which meshes with a spiral gear 50 slidably keyed on a vertical shaft 51 extending from top to bottom of a column 3 and journaled in mountings thereon. The spiral gear 50 is held to move vertically with the cross; rail by lugs 50 from the rail which engage the top and bottom of said gear. The shaft 48 also has fixed thereon a spur gear which in mesh with a segn'iental gear fixed on a. shaft 54 extending the length of the cross rail and journaled at the ends thereof. The shaft 54 has slidably keyed thereon a lever arm 55, this constituting a manual operating handle, and as illustratively shown extending obliquely downward in convenient position for manipulation. The handle 55 is mounted at the side of the saddle (i. e., of each of the saddles employed on the cross rail) and is held to move with the saddle as it is traversed along the cross rail by a bracket mounting 57. The vertical shaft 51 has fixed at the lower end portion thereof an operating lever handle 570, this handle being thus located at the side of the machine and convenient for control by an operator at this point. The described connections thus provide .means whereby the double friction clutch 41 is under full control of the operator either from his stand by the tool head through the lever or at the side of the machine through the lever 570, the direction of movement-being of course determined according to which of the gears 38,, 39 are engaged with the clutch 41 and the power being disconnected when said clutch is in neutral position. Ipreferably provide means whereby as the saddle reaches the end of its operative movement the clutch 1-1 will be shifted to neutral stopping the feed. For this purpose a wedge member 58 projects from the saddle in position to engagea shoulder 59 on the segmental gear 53 as the saddle'nearsits limit" of movement thusturning said gear and through the described connections-shlftmg the clutch.

The vertical power shaft 40 which is journaled in bearings at the side of the column 3 is adapted to be connected selectively either with a rapid traverse driving shaft 60 at the top of the machine frame or with relatively slow feed connections through a reducing gear box 61 at the base of the machine for its slower feed movement. For this purpose the shaft 40 has slidably keyed at its lower and upper ends clutch hubs 62, 63 respectively. These hubs are engaged by shifter levers ea, 65 respectively and the other ends of these levers are equipped with roller pins engaging in cam slots 66, 67 respectively of cam heads 66, 67" respectively fixed at the opposite ends of a vertical shaft 68 which extends the height of the machine column and is journaled thereto. Extending from the change gear box 61 is a driving clutch head 69 through which the shaft 40 extends loosely and as the clutch hub 62 is moved downward it is adapted to engage the clutch head 69. A similar driving clutch head 70 actuated by the rapid traverse shaft 60 is loosely mounted on the upper end of the shaft 40 at the top of the machine frame and is adapted to be engaged by the clutch hub 63 when said hub is shifted upward. It will be observed that the cam slots 66, 67 are oppositely disposed so that as the shaft 68 is rocked in one direction one of said slots, e.g., the slot 66 will lift its clutch hub 62 out of driven engagement with the head 69 while at the same time the other cam slot 67 is moving its clutch hub 63 into engagement with the clutch head 70 and vice versa. Thus by rocking the shaft 68 in one direction the rapid traverse connections will be engaged and the feed disengaged while as said shaft isrocked in the opposite direction the feed wlll be engaged and the rapid traverse disengaged. The shaft 68 has slidably keyed thereon a spiral gear 71 similar to the gear. 50 and similarly held to travel with the saddle by lugs 71 extending therefrom. The spiral gear 71 is in mesh with a spiral gear 72 fixed on a shaft 7 3 j ournaled lengthwise in the rail housing. The shaft 73 has fixed thereon a spur gear 74 which is engaged by a gear segment 75 fixed on a shaft 76 extending the length of the rail and j ournaled at the ends thereof. The shaft 7 6 has slidably keyed thereon a lever arm or arms 77 constituting a manual operating handle, it being understood that one of these arms is associated with each of the saddles and held to I move therewith by the bracket mounting 57 which thus co-o-perates to hold both of the lever handles 55, 77 for move ment with the saddle with which theyare associated. It is to be noted that the handles 77 which thus control the feed and rapid traverse connections are located adjacent the levers 55 which control the re versing friction clutch 41 and likewise always in convenient reach of the operator stationed at the tool head. The vertical rock shaft 68 has fixed at its lower end portion an operating handle 78 whereby the feed and rapid traverse connections may be controlled from the side of the machine, this handle being in proximity to the handle 570 of the reversing clutch. Thus the movements of the tool spindle and the saddle are under full control of the operator either from his station at the toolhead, or at the side of the machine and by reason of this capability of control at the tool head it is possible for the operator while maintaining close and constant supervision of the working of the tool to operate and engage or disengage his feeds and rapid traverse movements as desired and without requiring the assistance of another operator at the side of the machine as has hitherto been usual.

By having the manually operable stub shafts 13, 16 also carried by the saddle and adjacent to the described control levers the operator stationed at the tool head may effect a final manual adjustment or setting of the tools in conjunction with his control of the power rapid traverse and the feeds without moving from his station and in a most convenient manner. It will be noted that as shown the bracket mounting 57 which serves to hold the handles 55 and 57 for movement with the saddle is also arranged to serve as a mounting for the manually operated miter gears, the bracket 14 bearing said miters being an extension of said bracket mounting 57. Thus with the described control sys tem it is possible for a single operator to handle the machine to best advantage regardless of its size or the size or character of the work and without having to move from his position at the tool head; he can operate the quick power travel to the tool head or saddle and to the spindle in either direction; he can change from power rapid traverse to feeds and vice versa; he can operate his feeds in either direction and, finally he can set his tools to size the work as required. By means of the stationary levers attached to the sides of the machine he can control the power rapid travel and the feed at all times from the floor when desired. While the machine to which the invention is applied is herein referred to as a boring mill, it will be understood that this is merely illustrative of the field of use of such machine, which is adapted for turning, facing and the like machining operations as well as boring. I am aware that the invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and 1 therefore desire the present embodiment to be considered in all'respeets as illustrative and not restrictive, reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A boring mill, comprising a work table, a rail mounted in proximity thereto, atool head movably guided on said rail, a

, tool spindle movably fitted in said tool head,

operating connections for moving said tool head or said tool spindle selectively, means having an operating element movable with said tool head for controlling the movements of said tool head and of said spindle, and means borne by said head for manually adjusting and setting the same, said means embodying beveled pinions with stub shafts extending outward from the rail, to be engaged'by an operating handle or tool.

2. A boring mill, comprising a work table, a rail mounted in proximity thereto, a tool head movably guided on said rail, a tool spindle movably fitted in said tool head, operating mechanism having a rapid traverse i'zonnection and a slower rate feed connection selectively engageable therewith for actuating said tool head and said spindle, and means having an operating element movable with saidtool head for controlling 'the engagement of said rapid traverse connection and said feed connection with said tool head.

A boring mill, comprising a work table, a rail mounted in proximity thereto, a tool head movably guided on said rail, a

tool spindle movably fitted in said tool head,

operating mechanism for moving said tool head including a direction reversing clutch device, means for controlling said clutch device having an operating element'mounted for movement with said tool head, and means carried by said tool head formanually adjusting and setting the same, consisting in beveled pinions having stub shafts associated therewith extending outward from the 'rail.

i. A boring mill, comprising a work table, a. rail mounted adjacent thereto, a saddle movably fitted to said rail, a tool spindle movably fitted to said saddle, operating mechanism for said saddle including a rapid traverse connection and a slower rate feed connection selectively engageable therewith, and means including a handle mounted for movement with said saddle for controlling the engagement of said rapid traverse connection and said feed connection therewith.

5. A boring mill, comprising a work table, a rail mounted adjacent thereto, a saddle movably fitted to said rail, a tool spindle movably fitted to said saddle, operating mechanism for said saddle including a direction reversing clutch device, and means for controlling said clutch device including a manually operable handle mounted for movement with said saddle.

6. A boring mill, comprising a work table, a rail mounted adjacent thereto, a saddle movably fitted to said rail, a tool spindle movably fitted to said saddle, operating mechanism for said saddle including a rapid traverse connection and a slower rate feed connection selectively engagcable therewith, and means including a handle mounted for movement with said saddle for controlling'the engagement of said rapid traverse connection and said feed connection therewith, a. direction reversing clutch device in said operating mechanism, and means for controlling the same including a handle mouted for movement with said saddle.

7. A boring mill, comprising a work table, a rail mounted adjacent thereto, a saddle fitted to said rail, a tool spindle fitted to said saddle, means carried by said saddle for manually adjusting and setting said saddle and spindle, power operated mechanism including rapid traverse connections and separate "feed connections selectively engageable with said saddle, and means controlling the engagement of said connections having an operating handle also mounted for movement with said saddle.

8. A boring mill, comprising a work table, a rail mounted adjacent thereto, a saddle fitted to said rail, a tool spindle fitted to said saddle, means carried by said saddle for manually adjusting and setting said saddle and spindle, power operated mechanism for moving said saddle and said spindle including a direction reversing clutch device, and means for controlling said clutch device having an operating handle also mounted for movement with said saddle.

9. A boring mill, comprising a work table, a rail mounted adjacent thereto, a saddle fitted to said rail, a spindle movably fitted tosaid saddle, selectively engageable connections for imparting either rapid traverse movement or slower rate feed m0vement at will to said saddle,'and means for controlling the engagement of said connec tions having an operating handle mounted for movement with said saddle and another operating handle stationarily mounted at a side of the 'machine.

10. A boring mill, comprising a Work table, a rail mounted adjacent thereto, a

saddle fitted to said rail, a spindle movably fitted to said saddle, means for operating said saddle and said spindle including a direction reversing clutch, and means for controlling said clutch having an operating handle mounted for movement with said ALFRED TROSCH. 

